LM2663M: High-Performance Charge Pump Voltage Regulator | Features & Applications
LM2663M: High-Performance Charge Pump Voltage Regulator by Texas Instruments
The LM2663M is a versatile and efficient charge pump voltage regulator IC manufactured by Texas Instruments. Designed for power management applications, this DC/DC switching regulator offers unique capabilities for voltage conversion in space-constrained designs. While marked as 'Not For New Designs,' it remains a popular choice for many existing applications requiring reliable voltage regulation.
Detailed Features and Specifications
Advanced Charge Pump Technology
The LM2663M utilizes an innovative charge pump architecture that eliminates the need for bulky inductors, making it ideal for compact PCB designs. This topology provides several advantages:
- Reduced component count and board space requirements
- High efficiency conversion (up to 90% in typical applications)
- Low output ripple compared to traditional switching regulators
Flexible Voltage Conversion Options
One of the standout features of the LM2663M is its ability to provide multiple voltage conversion options:
- Voltage Inversion: Generates -Vin from positive input
- Voltage Doubling: Produces 2Vin from input voltage
- Voltage Halving: Creates Vin/2 for lower voltage requirements
Comprehensive Electrical Characteristics
| Parameter | Value |
|---|---|
| Input Voltage Range | 1.5V to 5.5V |
| Output Current | Up to 200mA |
| Switching Frequencies | 10kHz or 75kHz (selectable) |
| Operating Temperature | -40 C to +85 C |
| Package Type | 8-SOIC (3.90mm width) |
Practical Applications
Portable and Battery-Powered Devices
The LM2663M's wide input voltage range and high efficiency make it particularly suitable for:
- Smartphones and tablets
- Wearable electronics
- Portable medical devices
- Handheld test equipment
Industrial and Automotive Systems
Its robust design supports operation in demanding environments:
- Sensor interfaces in industrial controls
- Automotive infotainment systems
- Telematics and navigation devices
Design Considerations
PCB Layout Guidelines
For optimal performance, follow these layout recommendations:
- Place input and output capacitors as close as possible to the IC pins
- Use a solid ground plane for noise reduction
- Keep high-frequency switching traces short
- Consider thermal vias for heat dissipation in high-current applications
Component Selection
Key components to consider when designing with LM2663M:
- Low-ESR ceramic capacitors (1 F recommended)
- Properly rated diodes for protection circuits
- Appropriate PCB trace widths for current handling
Comparison with Alternative Solutions
When evaluating the LM2663M against similar devices, consider these advantages:
- Smaller footprint than inductor-based solutions
- Lower cost compared to more complex regulators
- Simpler design implementation
- Flexible output voltage options
Conclusion
The LM2663M charge pump voltage regulator from Texas Instruments continues to be a reliable solution for various power management needs. Its combination of flexibility, efficiency, and compact design makes it particularly valuable for space-constrained applications. While newer alternatives exist, the LM2663M remains a cost-effective choice for many designs, especially those requiring simple voltage inversion or multiplication.
For engineers working on portable electronics, industrial controls, or automotive systems, the LM2663M offers a proven solution with predictable performance. Texas Instruments provides comprehensive documentation, including detailed datasheets and application notes, to support successful implementation of this versatile voltage regulator.